參數(shù)資料
型號: MB90F897YPMT
廠商: FUJITSU LTD
元件分類: 微控制器/微處理器
英文描述: 16-BIT, FLASH, 16 MHz, MICROCONTROLLER, PQFP48
封裝: 0.50 MM PITCH, PLASTIC, LQFP-48
文件頁數(shù): 39/52頁
文件大小: 1370K
代理商: MB90F897YPMT
MB90895 Series
44
DS07-13731-5E
(Continued)
To satisfy the A/D conversion precision standard, consider the relationship between the external impedance
and minimum sampling time and either adjust the resistor value and operating frequency or decrease the
external impedance so that the sampling time is longer than the minimum value.
The relationship between the external impedance and minimum sampling time
If the sampling time cannot be sufficient, connect a capacitor of about 0.1
μF to the analog input pin.
<About errors>
As
AVR AVss become smaller, values of relative errors grow larger.
100
90
80
70
60
50
40
30
20
10
0
5
10
15
20
25
30
35
MB90F897/S/
MB90F897Y/YS
20
18
16
14
12
10
8
6
4
2
0
01
2
3
45
67
8
MB90F897/S/
MB90F897Y/YS
(At 4.5 V
≤ AVCC ≤ 5.5 V)
100
90
80
70
60
50
40
30
20
10
0
5
10
15
20
25
30
35
MB90F897/S/
MB90F897Y/YS
MB90F897/S/
MB90F897Y/YS
20
18
16
14
12
10
8
6
4
2
0
01
2
3
45
6
7
8
(At 4.0 V
≤ AVCC < 4.5 V)
[External impedance
= 0 kΩ to 100 kΩ]
[External impedance
= 0 kΩ to 100 kΩ]
[External impedance
= 0 kΩ to 20 kΩ]
[External impedance
= 0 kΩ to 20 kΩ]
External
impedance
[k
Ω
]
External
impedance
[k
Ω
]
External
impedance
[k
Ω
]
External
impedance
[k
Ω
]
→ Minimum sampling time [μs]
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